Ronan wants you to help him get his son, Corann, to "come out of his shell." (Or at least his Quadav shell...)

Walkthrough

This is one of the least intuitive quests I've found in the game. In order to complete this quest, you need to get 3 Shell Bugs and hand them to Ronan. Shell Bugs can be found on higher level Quadavs (Old, Copper, and Brass) which can be found in the Palborough Mines or Beaudaux. Or you can simply purchase them from the AH. Zone in and out and talk to Ronan again to receive your reward.